/*
 * Selling Partner API for Sellers
 * The Selling Partner API for Sellers lets you retrieve information on behalf of sellers about their seller account, such as the marketplaces they participate in. Along with listing the marketplaces that a seller can sell in, the API also provides additional information about the marketplace such as the default language and the default currency. The API also provides seller-specific information such as whether the seller has suspended listings in that marketplace.
 *
 * OpenAPI spec version: v1
 * 
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */


package com.amazon.spapi;

import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.RequestBody;

import java.io.IOException;

import okio.Buffer;
import okio.BufferedSink;
import okio.ForwardingSink;
import okio.Okio;
import okio.Sink;

public class ProgressRequestBody extends RequestBody {

    public interface ProgressRequestListener {
        void onRequestProgress(long bytesWritten, long contentLength, boolean done);
    }

    private final RequestBody requestBody;

    private final ProgressRequestListener progressListener;

    public ProgressRequestBody(RequestBody requestBody, ProgressRequestListener progressListener) {
        this.requestBody = requestBody;
        this.progressListener = progressListener;
    }

    @Override
    public MediaType contentType() {
        return requestBody.contentType();
    }

    @Override
    public long contentLength() throws IOException {
        return requestBody.contentLength();
    }

    @Override
    public void writeTo(BufferedSink sink) throws IOException {
        BufferedSink bufferedSink = Okio.buffer(sink(sink));
        requestBody.writeTo(bufferedSink);
        bufferedSink.flush();
    }

    private Sink sink(Sink sink) {
        return new ForwardingSink(sink) {

            long bytesWritten = 0L;
            long contentLength = 0L;

            @Override
            public void write(Buffer source, long byteCount) throws IOException {
                super.write(source, byteCount);
                if (contentLength == 0) {
                    contentLength = contentLength();
                }

                bytesWritten += byteCount;
                progressListener.onRequestProgress(bytesWritten, contentLength, bytesWritten == contentLength);
            }
        };
    }
}
